Bobbin changing device for shuttle for a two-shuttle loom



June 7, 1960 E. A. STAUDER BOBBIN CHANGING DEVICE FOR SHUTTLE FOR A TWO-SHUTTLE LOOM Filed April 10. 1959 2 Sheets-Sheet l June 7, 1960 E. A. STAUDER BOBBIN CHANGING DEVICE FOR SHUTTLE FOR A TWO-SHUTTLE LOOM Filed April 10, 1959 2 Sheets-Sheet 2 atent ()flice 2,939,496 Patented June 7,1960

u d Stat v Ting embodiment shown in Figs. 1, and2 concerns a bobbin. changinggdevice ffor the; bobbin 2 of the upper shedwhfle a new bobbin 3 is .to be inserted into the e shuttle 4. In the exchanging position,gthe shuttle box to JeahGuskenMaschinnfabrik u. Eisengiesseret',

Dulken, Rhine land, Germany i -Filed Ap1-.10, 1959,Ser. No.805,594

afcla'tms. Cl. 139 241 The present invention relates to a bobbin hangingdevice for two shuttle looms, especially for looms with filling to be entered in'the upper shed and in the lower shed. With looms of this type, the two shuttles are simultaneously thrown or picked in the same.direction through the sheds. Y

It is an object of the present inventionto provide a simplified bobbin changing device for use in connection with; a 100m of the above mentioned type. p

t is also an object of this invention to provide 8. bobbin changin device which:- will materially simplify the construction and the control system.

These and'other objects'arid advantages of theinvention will appear more clearly from the following specification in connection with the accompanying drawings, in which: 7

Fig. 1 represents a diagrammatic section through the shuttle boxes with a bobbin changing apparatus according to the invention for changing the bobbins in the upper shed shuttle, Fig. 1 showing the arrangement during the bobbin changing operation.

Fig. 2 is a section somewhat similar to that of Fig. 1 during the ordinary operation of the loom.

Fig. 3 illustrates a section through the shuttle boxes with the bobbin changing device according to the invention for the bobbin in the lower shed shuttle during the bobbin changing operation.

Fig. 4 is a section somewhat similar to that of Fig. 3

during the ordinary operation of the loom.

' The simplified bobbin changing device according to the invention is characterized primarily in that at one side of the loom there is arranged a stationary bobbin changing apparatus for the exchanging of the bobbins of the upper shed shuttle, whereas at the other side of the loom there is arranged a stationary bobbin changing apparatus for the exchanging of the bobbins for the lower shed shuttle. This arrangement results in a simple construction and a simplecontrol mechanism. In conformity with the present invention, the upper shed shuttle box may, for purposes of exchanging the bobbin of the upper shed shuttle, be movable toward the front below the bobbin changing apparatus. Similarly, on the other side of the loom the lower shed shuttle box may, for purposes of exchanging the bobbin of the lower shed shuttle, be movable toward the front below the bobbin changing apparatus. This displacement of one or the other shuttle box will be efiected only when the exchanging of the bobbin becomes necessary.- According to a practical is tilted-toward .thebfront, so that .while a new bobbin Slistobeiinsei-tedlbymeans ofahammer 19, the empty bobbin 2 can drop freely downwardly past the stationary lower shuttle ,box .6.

This, 'l=t1ng movement of theshuttle box 5 is effected bya two-arm lever7 which-is tiltably journalled on shaft 20 connected to aloom ,sley 27, said lever 7 being connected to shuttle box 5 by means of a joint or bolt 21. p

. The loom frame .22 carries a bolt 23 having journalled thereon an abutment 9 which, similar to the push rod 24 .iscontrolled by a control device for effecting the bob bin exchange. It-will1be appreciated that the abutment 9. will be actuatedin conformity with the quantity of yarn or thread ,onthe respective bobbin. According to customary and standard procedure, afeeler' (not shown) sensesthequantityof yarn or thread on the bobbin and as soon as the feeler ascertains a. certain minimum quantityof yarn or thread on the respective bobbin, the feelcr initiates a control impulse which brings about an adjustment of the piston 29' reciprocably mounted in cylinder-.30. I i-a bobbin has to be exchanged, the abutment :9 moves .out of the tilted position shown in Fig, 2 and upwardly into the path of lever arm 8 pertaining to the two-arm lever 7 which latter through the intervention of shaft 20 and bolt 21 acts upon the shuttle box 5. By means of link 10, shuttle box 5 is guided along a flat arc whereby a contact of box 5 with the stationary shuttle box 6 will be prevented. The tiltable shuttle box 5 is provided with a piercer 25 which acts upon push rod 24 which in its turn moves a hammer 19 downwardly in a manner known per se through the intervention of an angle-shaped hammer lever 26. v As a. result thereof, a new bobbin 3 is thrown into the shuttle 4, and the empty bobbin 2 is thrown out of shuttle 4.

After the bobbin exchange has been effected, the shuttle box 5 is by means of spring 11 withdrawn into its normal position shown in Fig. 2. Inasmuch as at the same time abutment 9 and thus also push rod 24 are tilted by the exchange apparatus the bobbin exchange apparatus will be inactive during thefurther operation of the loom.

Referring now to Figs. 3 and 4, these figures show a device similar to that of Figs. 1 and 2 for the bobbin exchange in the lower shuttle box. This arrangement is equipped witha magazine 13 which is so arranged that a new bobbin 14 can be thrown into the forwardly tilted lower shuttle box 15. In this way, the empty bobbin 12 will drop out of this lower shuttle box 15. The upper shuttle box 16 remains stationary and will not be tilted. Also with this embodiment, the movable shuttle box 15 is, by means of a two-arm lever 28, journalled on the loom sley 27, whereas a link 10 connects the lower shuttle box 15 with the upper box 16. The control is the same as described above and is elfected by means of an embodiment of the invention, the adjustable shuttle boxes may be controlled by double levers and links. To allow abutment 17 which acts upon lever arm 18 of the double lever 28. After the bobbin exchange has been efiected, the lower shuttle box 15 is likewise returned by means of a spring 11.

It is, of course, to be understood that the present invention is, by no means, limited to the particular constructions shown in the drawings but also comprises. any modifications within the scope of the appended claims.

What I claim is:

1. A bobbin changing device for a two-shuttle loom having an upper shed and a lower shed: an upper shed shuttle box adapted to receive a bobbin for the upper shed and arranged at one side of said loom, a first stationary bobbin changing apparatus arranged at said one side of said loom. at a level higher than said upper shed 3 a. shuttle box, means operatively connected-to said upper shed shuttle box and operable to move the latter below said first stationary bobbin changing apparatus, alower shed shuttle box adapted to receive a bobbin for the lower shed and arranged at said other side, ofsaid loom, a second stationary :bobbin changing apparatus'arran'ged at said other side of saidloom-at a levelhigheiithan'that of said lower shed shuttle box, and means operatively connected to said lower shed shuttle'box and adapted to move the same below said second bobbin changin'g'apjparatus for exchanging the bobbin in said lower shed shuttle box; 2. In a bobbin changing device for a two-s huttle loom having an upper shed anda lower shed: a lower Stfle tionary first shuttle box arranged at one .side of said loom, an upper movable second shuttle box arranged at said one side of said loom and at a level higher than said first'shut tle' box, a first magazine'likewise arranged at said one side of said loom and adapted to receive and store loaded bobbins to be charged into said movable shuttle box, link means connecting said first shuttle box to said second shuttle box while allowing the latter to be moved relative to said first shuttle box into a charging position, means for discharging an empty bobbin from said second shuttle box in said charging position and for transferring one bobbin at a time from said first magazine into said second shuttle box, an upper stationary third shuttle box arranged at the other side of said loom, a lower movable fourth 'shuttle'box'arranged at said other side of said loom and at a level-lower than said third'shuttle box, a second magazine likewise'arranged at said other side of said loom and adapted to receive and store loaded bobbins to be charged into said movable fourth shuttle box, link means connecting said third shuttle box to said fourth shuttle box while allowing the latter to be moved relative to said third shuttle box into a charging position, means for discharging an empty bobbin from said fourth shuttle box in said charging position and for transferring one bobbin at a time from said second magazine intofisaid fourth; shuttle box, .and. lever means respectively operatively connected tdsaid second and fourth shuttle boxes for respectively moving said second and fourth shuttle'boxes into their respective charging posi ti'ons.

3. A bobbin changing 'device according to claim 2, which includes abutment means respectively movable into a position for limiting the movement of said second and fourth shuttle boxes into'their charging positions, and control means respectively operatively connected to said abutment means and said means for discharging an empty bobbin from the respective movable shuttle boxes and for transferringone bobbin at a time from the respective magazines into the respective movable shuttle boxes.

References Cited in the file of this patent UNITED STATES PATENTS 1,807,722 Baker et al. June 2, 1931 2,149,893 Brooks Dec. 20, 1938 r; FOREIGN PATENTS Great Britain ,m 16, 1958 

